1 /* 2 * Media Transfer Protocol implementation, backed by host filesystem. 3 * 4 * Copyright Red Hat, Inc 2014 5 * 6 * Author: 7 * Gerd Hoffmann <kraxel@redhat.com> 8 * 9 * This code is licensed under the GPL v2 or later. 10 */ 11 12 #include <wchar.h> 13 #include <dirent.h> 14 #include <unistd.h> 15 16 #include <sys/stat.h> 17 #include <sys/statvfs.h> 18 #ifdef __linux__ 19 #include <sys/inotify.h> 20 #include "qemu/main-loop.h" 21 #endif 22 23 #include "qemu-common.h" 24 #include "qemu/iov.h" 25 #include "trace.h" 26 #include "hw/usb.h" 27 #include "hw/usb/desc.h" 28 29 /* ----------------------------------------------------------------------- */ 30 31 enum mtp_container_type { 32 TYPE_COMMAND = 1, 33 TYPE_DATA = 2, 34 TYPE_RESPONSE = 3, 35 TYPE_EVENT = 4, 36 }; 37 38 enum mtp_code { 39 /* command codes */ 40 CMD_GET_DEVICE_INFO = 0x1001, 41 CMD_OPEN_SESSION = 0x1002, 42 CMD_CLOSE_SESSION = 0x1003, 43 CMD_GET_STORAGE_IDS = 0x1004, 44 CMD_GET_STORAGE_INFO = 0x1005, 45 CMD_GET_NUM_OBJECTS = 0x1006, 46 CMD_GET_OBJECT_HANDLES = 0x1007, 47 CMD_GET_OBJECT_INFO = 0x1008, 48 CMD_GET_OBJECT = 0x1009, 49 CMD_GET_PARTIAL_OBJECT = 0x101b, 50 51 /* response codes */ 52 RES_OK = 0x2001, 53 RES_GENERAL_ERROR = 0x2002, 54 RES_SESSION_NOT_OPEN = 0x2003, 55 RES_INVALID_TRANSACTION_ID = 0x2004, 56 RES_OPERATION_NOT_SUPPORTED = 0x2005, 57 RES_PARAMETER_NOT_SUPPORTED = 0x2006, 58 RES_INCOMPLETE_TRANSFER = 0x2007, 59 RES_INVALID_STORAGE_ID = 0x2008, 60 RES_INVALID_OBJECT_HANDLE = 0x2009, 61 RES_SPEC_BY_FORMAT_UNSUPPORTED = 0x2014, 62 RES_INVALID_PARENT_OBJECT = 0x201a, 63 RES_INVALID_PARAMETER = 0x201d, 64 RES_SESSION_ALREADY_OPEN = 0x201e, 65 66 /* format codes */ 67 FMT_UNDEFINED_OBJECT = 0x3000, 68 FMT_ASSOCIATION = 0x3001, 69 70 /* event codes */ 71 EVT_OBJ_ADDED = 0x4002, 72 EVT_OBJ_REMOVED = 0x4003, 73 EVT_OBJ_INFO_CHANGED = 0x4007, 74 }; 75 76 typedef struct { 77 uint32_t length; 78 uint16_t type; 79 uint16_t code; 80 uint32_t trans; 81 } QEMU_PACKED mtp_container; 82 83 /* ----------------------------------------------------------------------- */ 84 85 typedef struct MTPState MTPState; 86 typedef struct MTPControl MTPControl; 87 typedef struct MTPData MTPData; 88 typedef struct MTPObject MTPObject; 89 90 enum { 91 EP_DATA_IN = 1, 92 EP_DATA_OUT, 93 EP_EVENT, 94 }; 95 96 #ifdef __linux__ 97 typedef struct MTPMonEntry MTPMonEntry; 98 99 struct MTPMonEntry { 100 uint32_t event; 101 uint32_t handle; 102 103 QTAILQ_ENTRY(MTPMonEntry) next; 104 }; 105 #endif 106 107 struct MTPControl { 108 uint16_t code; 109 uint32_t trans; 110 int argc; 111 uint32_t argv[5]; 112 }; 113 114 struct MTPData { 115 uint16_t code; 116 uint32_t trans; 117 uint32_t offset; 118 uint32_t length; 119 uint32_t alloc; 120 uint8_t *data; 121 bool first; 122 int fd; 123 }; 124 125 struct MTPObject { 126 uint32_t handle; 127 uint16_t format; 128 char *name; 129 char *path; 130 struct stat stat; 131 #ifdef __linux__ 132 /* inotify watch cookie */ 133 int watchfd; 134 #endif 135 MTPObject *parent; 136 uint32_t nchildren; 137 QLIST_HEAD(, MTPObject) children; 138 QLIST_ENTRY(MTPObject) list; 139 bool have_children; 140 QTAILQ_ENTRY(MTPObject) next; 141 }; 142 143 struct MTPState { 144 USBDevice dev; 145 char *root; 146 char *desc; 147 uint32_t flags; 148 149 MTPData *data_in; 150 MTPData *data_out; 151 MTPControl *result; 152 uint32_t session; 153 uint32_t next_handle; 154 155 QTAILQ_HEAD(, MTPObject) objects; 156 #ifdef __linux__ 157 /* inotify descriptor */ 158 int inotifyfd; 159 QTAILQ_HEAD(events, MTPMonEntry) events; 160 #endif 161 }; 162 163 #define TYPE_USB_MTP "usb-mtp" 164 #define USB_MTP(obj) OBJECT_CHECK(MTPState, (obj), TYPE_USB_MTP) 165 166 #define QEMU_STORAGE_ID 0x00010001 167 168 #define MTP_FLAG_WRITABLE 0 169 170 #define FLAG_SET(_mtp, _flag) ((_mtp)->flags & (1 << (_flag))) 171 172 /* ----------------------------------------------------------------------- */ 173 174 #define MTP_MANUFACTURER "QEMU" 175 #define MTP_PRODUCT "QEMU filesharing" 176 177 enum { 178 STR_MANUFACTURER = 1, 179 STR_PRODUCT, 180 STR_SERIALNUMBER, 181 STR_MTP, 182 STR_CONFIG_FULL, 183 STR_CONFIG_HIGH, 184 STR_CONFIG_SUPER, 185 }; 186 187 static const USBDescStrings desc_strings = { 188 [STR_MANUFACTURER] = MTP_MANUFACTURER, 189 [STR_PRODUCT] = MTP_PRODUCT, 190 [STR_SERIALNUMBER] = "34617", 191 [STR_MTP] = "MTP", 192 [STR_CONFIG_FULL] = "Full speed config (usb 1.1)", 193 [STR_CONFIG_HIGH] = "High speed config (usb 2.0)", 194 [STR_CONFIG_SUPER] = "Super speed config (usb 3.0)", 195 }; 196 197 static const USBDescIface desc_iface_full = { 198 .bInterfaceNumber = 0, 199 .bNumEndpoints = 3, 200 .bInterfaceClass = USB_CLASS_STILL_IMAGE, 201 .bInterfaceSubClass = 0x01, 202 .bInterfaceProtocol = 0x01, 203 .iInterface = STR_MTP, 204 .eps = (USBDescEndpoint[]) { 205 { 206 .bEndpointAddress = USB_DIR_IN | EP_DATA_IN, 207 .bmAttributes = USB_ENDPOINT_XFER_BULK, 208 .wMaxPacketSize = 64, 209 },{ 210 .bEndpointAddress = USB_DIR_OUT | EP_DATA_OUT, 211 .bmAttributes = USB_ENDPOINT_XFER_BULK, 212 .wMaxPacketSize = 64, 213 },{ 214 .bEndpointAddress = USB_DIR_IN | EP_EVENT, 215 .bmAttributes = USB_ENDPOINT_XFER_INT, 216 .wMaxPacketSize = 64, 217 .bInterval = 0x0a, 218 }, 219 } 220 }; 221 222 static const USBDescDevice desc_device_full = { 223 .bcdUSB = 0x0200, 224 .bMaxPacketSize0 = 8, 225 .bNumConfigurations = 1, 226 .confs = (USBDescConfig[]) { 227 { 228 .bNumInterfaces = 1, 229 .bConfigurationValue = 1, 230 .iConfiguration = STR_CONFIG_FULL, 231 .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_WAKEUP, 232 .bMaxPower = 2, 233 .nif = 1, 234 .ifs = &desc_iface_full, 235 }, 236 }, 237 }; 238 239 static const USBDescIface desc_iface_high = { 240 .bInterfaceNumber = 0, 241 .bNumEndpoints = 3, 242 .bInterfaceClass = USB_CLASS_STILL_IMAGE, 243 .bInterfaceSubClass = 0x01, 244 .bInterfaceProtocol = 0x01, 245 .iInterface = STR_MTP, 246 .eps = (USBDescEndpoint[]) { 247 { 248 .bEndpointAddress = USB_DIR_IN | EP_DATA_IN, 249 .bmAttributes = USB_ENDPOINT_XFER_BULK, 250 .wMaxPacketSize = 512, 251 },{ 252 .bEndpointAddress = USB_DIR_OUT | EP_DATA_OUT, 253 .bmAttributes = USB_ENDPOINT_XFER_BULK, 254 .wMaxPacketSize = 512, 255 },{ 256 .bEndpointAddress = USB_DIR_IN | EP_EVENT, 257 .bmAttributes = USB_ENDPOINT_XFER_INT, 258 .wMaxPacketSize = 64, 259 .bInterval = 0x0a, 260 }, 261 } 262 }; 263 264 static const USBDescDevice desc_device_high = { 265 .bcdUSB = 0x0200, 266 .bMaxPacketSize0 = 64, 267 .bNumConfigurations = 1, 268 .confs = (USBDescConfig[]) { 269 { 270 .bNumInterfaces = 1, 271 .bConfigurationValue = 1, 272 .iConfiguration = STR_CONFIG_HIGH, 273 .bmAttributes = USB_CFG_ATT_ONE | USB_CFG_ATT_WAKEUP, 274 .bMaxPower = 2, 275 .nif = 1, 276 .ifs = &desc_iface_high, 277 }, 278 }, 279 }; 280 281 static const USBDescMSOS desc_msos = { 282 .CompatibleID = "MTP", 283 .SelectiveSuspendEnabled = true, 284 }; 285 286 static const USBDesc desc = { 287 .id = { 288 .idVendor = 0x46f4, /* CRC16() of "QEMU" */ 289 .idProduct = 0x0004, 290 .bcdDevice = 0, 291 .iManufacturer = STR_MANUFACTURER, 292 .iProduct = STR_PRODUCT, 293 .iSerialNumber = STR_SERIALNUMBER, 294 }, 295 .full = &desc_device_full, 296 .high = &desc_device_high, 297 .str = desc_strings, 298 .msos = &desc_msos, 299 }; 300 301 /* ----------------------------------------------------------------------- */ 302 303 static MTPObject *usb_mtp_object_alloc(MTPState *s, uint32_t handle, 304 MTPObject *parent, char *name) 305 { 306 MTPObject *o = g_new0(MTPObject, 1); 307 308 if (name[0] == '.') { 309 goto ignore; 310 } 311 312 o->handle = handle; 313 o->parent = parent; 314 o->name = g_strdup(name); 315 if (parent == NULL) { 316 o->path = g_strdup(name); 317 } else { 318 o->path = g_strdup_printf("%s/%s", parent->path, name); 319 } 320 321 if (lstat(o->path, &o->stat) != 0) { 322 goto ignore; 323 } 324 if (S_ISREG(o->stat.st_mode)) { 325 o->format = FMT_UNDEFINED_OBJECT; 326 } else if (S_ISDIR(o->stat.st_mode)) { 327 o->format = FMT_ASSOCIATION; 328 } else { 329 goto ignore; 330 } 331 332 if (access(o->path, R_OK) != 0) { 333 goto ignore; 334 } 335 336 trace_usb_mtp_object_alloc(s->dev.addr, o->handle, o->path); 337 338 QTAILQ_INSERT_TAIL(&s->objects, o, next); 339 return o; 340 341 ignore: 342 g_free(o->name); 343 g_free(o->path); 344 g_free(o); 345 return NULL; 346 } 347 348 static void usb_mtp_object_free(MTPState *s, MTPObject *o) 349 { 350 MTPObject *iter; 351 352 if (!o) { 353 return; 354 } 355 356 trace_usb_mtp_object_free(s->dev.addr, o->handle, o->path); 357 358 QTAILQ_REMOVE(&s->objects, o, next); 359 if (o->parent) { 360 QLIST_REMOVE(o, list); 361 o->parent->nchildren--; 362 } 363 364 while (!QLIST_EMPTY(&o->children)) { 365 iter = QLIST_FIRST(&o->children); 366 usb_mtp_object_free(s, iter); 367 } 368 g_free(o->name); 369 g_free(o->path); 370 g_free(o); 371 } 372 373 static MTPObject *usb_mtp_object_lookup(MTPState *s, uint32_t handle) 374 { 375 MTPObject *o; 376 377 QTAILQ_FOREACH(o, &s->objects, next) { 378 if (o->handle == handle) { 379 return o; 380 } 381 } 382 return NULL; 383 } 384 385 static MTPObject *usb_mtp_add_child(MTPState *s, MTPObject *o, 386 char *name) 387 { 388 MTPObject *child = 389 usb_mtp_object_alloc(s, s->next_handle++, o, name); 390 391 if (child) { 392 trace_usb_mtp_add_child(s->dev.addr, child->handle, child->path); 393 QLIST_INSERT_HEAD(&o->children, child, list); 394 o->nchildren++; 395 396 if (child->format == FMT_ASSOCIATION) { 397 QLIST_INIT(&child->children); 398 } 399 } 400 401 return child; 402 } 403 404 #ifdef __linux__ 405 static MTPObject *usb_mtp_object_lookup_name(MTPObject *parent, 406 char *name, int len) 407 { 408 MTPObject *iter; 409 410 QLIST_FOREACH(iter, &parent->children, list) { 411 if (strncmp(iter->name, name, len) == 0) { 412 return iter; 413 } 414 } 415 416 return NULL; 417 } 418 419 static MTPObject *usb_mtp_object_lookup_wd(MTPState *s, int wd) 420 { 421 MTPObject *iter; 422 423 QTAILQ_FOREACH(iter, &s->objects, next) { 424 if (iter->watchfd == wd) { 425 return iter; 426 } 427 } 428 429 return NULL; 430 } 431 432 static void inotify_watchfn(void *arg) 433 { 434 MTPState *s = arg; 435 ssize_t bytes; 436 /* From the man page: atleast one event can be read */ 437 int len = sizeof(struct inotify_event) + NAME_MAX + 1; 438 int pos; 439 char buf[len]; 440 441 for (;;) { 442 bytes = read(s->inotifyfd, buf, len); 443 pos = 0; 444 445 if (bytes <= 0) { 446 /* Better luck next time */ 447 return; 448 } 449 450 /* 451 * TODO: Ignore initiator initiated events. 452 * For now we are good because the store is RO 453 */ 454 while (bytes > 0) { 455 char *p = buf + pos; 456 struct inotify_event *event = (struct inotify_event *)p; 457 int watchfd = 0; 458 uint32_t mask = event->mask & (IN_CREATE | IN_DELETE | 459 IN_MODIFY | IN_IGNORED); 460 MTPObject *parent = usb_mtp_object_lookup_wd(s, event->wd); 461 MTPMonEntry *entry = NULL; 462 MTPObject *o; 463 464 pos = pos + sizeof(struct inotify_event) + event->len; 465 bytes = bytes - pos; 466 467 if (!parent) { 468 continue; 469 } 470 471 switch (mask) { 472 case IN_CREATE: 473 if (usb_mtp_object_lookup_name 474 (parent, event->name, event->len)) { 475 /* Duplicate create event */ 476 continue; 477 } 478 entry = g_new0(MTPMonEntry, 1); 479 entry->handle = s->next_handle; 480 entry->event = EVT_OBJ_ADDED; 481 o = usb_mtp_add_child(s, parent, event->name); 482 if (!o) { 483 g_free(entry); 484 continue; 485 } 486 o->watchfd = watchfd; 487 trace_usb_mtp_inotify_event(s->dev.addr, event->name, 488 event->mask, "Obj Added"); 489 break; 490 491 case IN_DELETE: 492 /* 493 * The kernel issues a IN_IGNORED event 494 * when a dir containing a watchpoint is 495 * deleted, so we don't have to delete the 496 * watchpoint 497 */ 498 o = usb_mtp_object_lookup_name(parent, event->name, event->len); 499 if (!o) { 500 continue; 501 } 502 entry = g_new0(MTPMonEntry, 1); 503 entry->handle = o->handle; 504 entry->event = EVT_OBJ_REMOVED; 505 trace_usb_mtp_inotify_event(s->dev.addr, o->path, 506 event->mask, "Obj Deleted"); 507 usb_mtp_object_free(s, o); 508 break; 509 510 case IN_MODIFY: 511 o = usb_mtp_object_lookup_name(parent, event->name, event->len); 512 if (!o) { 513 continue; 514 } 515 entry = g_new0(MTPMonEntry, 1); 516 entry->handle = o->handle; 517 entry->event = EVT_OBJ_INFO_CHANGED; 518 trace_usb_mtp_inotify_event(s->dev.addr, o->path, 519 event->mask, "Obj Modified"); 520 break; 521 522 case IN_IGNORED: 523 o = usb_mtp_object_lookup_name(parent, event->name, event->len); 524 trace_usb_mtp_inotify_event(s->dev.addr, o->path, 525 event->mask, "Obj ignored"); 526 break; 527 528 default: 529 fprintf(stderr, "usb-mtp: failed to parse inotify event\n"); 530 continue; 531 } 532 533 if (entry) { 534 QTAILQ_INSERT_HEAD(&s->events, entry, next); 535 } 536 } 537 } 538 } 539 540 static int usb_mtp_inotify_init(MTPState *s) 541 { 542 int fd; 543 544 fd = inotify_init1(IN_NONBLOCK); 545 if (fd == -1) { 546 return 1; 547 } 548 549 QTAILQ_INIT(&s->events); 550 s->inotifyfd = fd; 551 552 qemu_set_fd_handler(fd, inotify_watchfn, NULL, s); 553 554 return 0; 555 } 556 557 static void usb_mtp_inotify_cleanup(MTPState *s) 558 { 559 MTPMonEntry *e, *p; 560 561 if (!s->inotifyfd) { 562 return; 563 } 564 565 qemu_set_fd_handler(s->inotifyfd, NULL, NULL, s); 566 close(s->inotifyfd); 567 568 QTAILQ_FOREACH_SAFE(e, &s->events, next, p) { 569 QTAILQ_REMOVE(&s->events, e, next); 570 g_free(e); 571 } 572 } 573 574 static int usb_mtp_add_watch(int inotifyfd, char *path) 575 { 576 uint32_t mask = IN_CREATE | IN_DELETE | IN_MODIFY | 577 IN_ISDIR; 578 579 return inotify_add_watch(inotifyfd, path, mask); 580 } 581 #endif 582 583 static void usb_mtp_object_readdir(MTPState *s, MTPObject *o) 584 { 585 struct dirent *entry; 586 DIR *dir; 587 588 if (o->have_children) { 589 return; 590 } 591 o->have_children = true; 592 593 dir = opendir(o->path); 594 if (!dir) { 595 return; 596 } 597 #ifdef __linux__ 598 int watchfd = usb_mtp_add_watch(s->inotifyfd, o->path); 599 if (watchfd == -1) { 600 fprintf(stderr, "usb-mtp: failed to add watch for %s\n", o->path); 601 } else { 602 trace_usb_mtp_inotify_event(s->dev.addr, o->path, 603 0, "Watch Added"); 604 o->watchfd = watchfd; 605 } 606 #endif 607 while ((entry = readdir(dir)) != NULL) { 608 usb_mtp_add_child(s, o, entry->d_name); 609 } 610 closedir(dir); 611 } 612 613 /* ----------------------------------------------------------------------- */ 614 615 static MTPData *usb_mtp_data_alloc(MTPControl *c) 616 { 617 MTPData *data = g_new0(MTPData, 1); 618 619 data->code = c->code; 620 data->trans = c->trans; 621 data->fd = -1; 622 data->first = true; 623 return data; 624 } 625 626 static void usb_mtp_data_free(MTPData *data) 627 { 628 if (data == NULL) { 629 return; 630 } 631 if (data->fd != -1) { 632 close(data->fd); 633 } 634 g_free(data->data); 635 g_free(data); 636 } 637 638 static void usb_mtp_realloc(MTPData *data, uint32_t bytes) 639 { 640 if (data->length + bytes <= data->alloc) { 641 return; 642 } 643 data->alloc = (data->length + bytes + 0xff) & ~0xff; 644 data->data = g_realloc(data->data, data->alloc); 645 } 646 647 static void usb_mtp_add_u8(MTPData *data, uint8_t val) 648 { 649 usb_mtp_realloc(data, 1); 650 data->data[data->length++] = val; 651 } 652 653 static void usb_mtp_add_u16(MTPData *data, uint16_t val) 654 { 655 usb_mtp_realloc(data, 2); 656 data->data[data->length++] = (val >> 0) & 0xff; 657 data->data[data->length++] = (val >> 8) & 0xff; 658 } 659 660 static void usb_mtp_add_u32(MTPData *data, uint32_t val) 661 { 662 usb_mtp_realloc(data, 4); 663 data->data[data->length++] = (val >> 0) & 0xff; 664 data->data[data->length++] = (val >> 8) & 0xff; 665 data->data[data->length++] = (val >> 16) & 0xff; 666 data->data[data->length++] = (val >> 24) & 0xff; 667 } 668 669 static void usb_mtp_add_u64(MTPData *data, uint64_t val) 670 { 671 usb_mtp_realloc(data, 8); 672 data->data[data->length++] = (val >> 0) & 0xff; 673 data->data[data->length++] = (val >> 8) & 0xff; 674 data->data[data->length++] = (val >> 16) & 0xff; 675 data->data[data->length++] = (val >> 24) & 0xff; 676 data->data[data->length++] = (val >> 32) & 0xff; 677 data->data[data->length++] = (val >> 40) & 0xff; 678 data->data[data->length++] = (val >> 48) & 0xff; 679 data->data[data->length++] = (val >> 56) & 0xff; 680 } 681 682 static void usb_mtp_add_u16_array(MTPData *data, uint32_t len, 683 const uint16_t *vals) 684 { 685 int i; 686 687 usb_mtp_add_u32(data, len); 688 for (i = 0; i < len; i++) { 689 usb_mtp_add_u16(data, vals[i]); 690 } 691 } 692 693 static void usb_mtp_add_u32_array(MTPData *data, uint32_t len, 694 const uint32_t *vals) 695 { 696 int i; 697 698 usb_mtp_add_u32(data, len); 699 for (i = 0; i < len; i++) { 700 usb_mtp_add_u32(data, vals[i]); 701 } 702 } 703 704 static void usb_mtp_add_wstr(MTPData *data, const wchar_t *str) 705 { 706 uint32_t len = wcslen(str); 707 int i; 708 709 if (len > 0) { 710 len++; /* include terminating L'\0' */ 711 } 712 713 usb_mtp_add_u8(data, len); 714 for (i = 0; i < len; i++) { 715 usb_mtp_add_u16(data, str[i]); 716 } 717 } 718 719 static void usb_mtp_add_str(MTPData *data, const char *str) 720 { 721 uint32_t len = strlen(str)+1; 722 wchar_t wstr[len]; 723 size_t ret; 724 725 ret = mbstowcs(wstr, str, len); 726 if (ret == -1) { 727 usb_mtp_add_wstr(data, L"Oops"); 728 } else { 729 usb_mtp_add_wstr(data, wstr); 730 } 731 } 732 733 static void usb_mtp_add_time(MTPData *data, time_t time) 734 { 735 char buf[16]; 736 struct tm tm; 737 738 gmtime_r(&time, &tm); 739 strftime(buf, sizeof(buf), "%Y%m%dT%H%M%S", &tm); 740 usb_mtp_add_str(data, buf); 741 } 742 743 /* ----------------------------------------------------------------------- */ 744 745 static void usb_mtp_queue_result(MTPState *s, uint16_t code, uint32_t trans, 746 int argc, uint32_t arg0, uint32_t arg1) 747 { 748 MTPControl *c = g_new0(MTPControl, 1); 749 750 c->code = code; 751 c->trans = trans; 752 c->argc = argc; 753 if (argc > 0) { 754 c->argv[0] = arg0; 755 } 756 if (argc > 1) { 757 c->argv[1] = arg1; 758 } 759 760 assert(s->result == NULL); 761 s->result = c; 762 } 763 764 /* ----------------------------------------------------------------------- */ 765 766 static MTPData *usb_mtp_get_device_info(MTPState *s, MTPControl *c) 767 { 768 static const uint16_t ops[] = { 769 CMD_GET_DEVICE_INFO, 770 CMD_OPEN_SESSION, 771 CMD_CLOSE_SESSION, 772 CMD_GET_STORAGE_IDS, 773 CMD_GET_STORAGE_INFO, 774 CMD_GET_NUM_OBJECTS, 775 CMD_GET_OBJECT_HANDLES, 776 CMD_GET_OBJECT_INFO, 777 CMD_GET_OBJECT, 778 CMD_GET_PARTIAL_OBJECT, 779 }; 780 static const uint16_t fmt[] = { 781 FMT_UNDEFINED_OBJECT, 782 FMT_ASSOCIATION, 783 }; 784 MTPData *d = usb_mtp_data_alloc(c); 785 786 trace_usb_mtp_op_get_device_info(s->dev.addr); 787 788 usb_mtp_add_u16(d, 100); 789 usb_mtp_add_u32(d, 0xffffffff); 790 usb_mtp_add_u16(d, 0x0101); 791 usb_mtp_add_wstr(d, L""); 792 usb_mtp_add_u16(d, 0x0000); 793 794 usb_mtp_add_u16_array(d, ARRAY_SIZE(ops), ops); 795 usb_mtp_add_u16_array(d, 0, NULL); 796 usb_mtp_add_u16_array(d, 0, NULL); 797 usb_mtp_add_u16_array(d, 0, NULL); 798 usb_mtp_add_u16_array(d, ARRAY_SIZE(fmt), fmt); 799 800 usb_mtp_add_wstr(d, L"" MTP_MANUFACTURER); 801 usb_mtp_add_wstr(d, L"" MTP_PRODUCT); 802 usb_mtp_add_wstr(d, L"0.1"); 803 usb_mtp_add_wstr(d, L"0123456789abcdef0123456789abcdef"); 804 805 return d; 806 } 807 808 static MTPData *usb_mtp_get_storage_ids(MTPState *s, MTPControl *c) 809 { 810 static const uint32_t ids[] = { 811 QEMU_STORAGE_ID, 812 }; 813 MTPData *d = usb_mtp_data_alloc(c); 814 815 trace_usb_mtp_op_get_storage_ids(s->dev.addr); 816 817 usb_mtp_add_u32_array(d, ARRAY_SIZE(ids), ids); 818 819 return d; 820 } 821 822 static MTPData *usb_mtp_get_storage_info(MTPState *s, MTPControl *c) 823 { 824 MTPData *d = usb_mtp_data_alloc(c); 825 struct statvfs buf; 826 int rc; 827 828 trace_usb_mtp_op_get_storage_info(s->dev.addr); 829 830 if (FLAG_SET(s, MTP_FLAG_WRITABLE)) { 831 usb_mtp_add_u16(d, 0x0003); 832 usb_mtp_add_u16(d, 0x0002); 833 usb_mtp_add_u16(d, 0x0000); 834 } else { 835 usb_mtp_add_u16(d, 0x0001); 836 usb_mtp_add_u16(d, 0x0002); 837 usb_mtp_add_u16(d, 0x0001); 838 } 839 840 rc = statvfs(s->root, &buf); 841 if (rc == 0) { 842 usb_mtp_add_u64(d, (uint64_t)buf.f_frsize * buf.f_blocks); 843 usb_mtp_add_u64(d, (uint64_t)buf.f_bavail * buf.f_blocks); 844 usb_mtp_add_u32(d, buf.f_ffree); 845 } else { 846 usb_mtp_add_u64(d, 0xffffffff); 847 usb_mtp_add_u64(d, 0xffffffff); 848 usb_mtp_add_u32(d, 0xffffffff); 849 } 850 851 usb_mtp_add_str(d, s->desc); 852 usb_mtp_add_wstr(d, L"123456789abcdef"); 853 return d; 854 } 855 856 static MTPData *usb_mtp_get_object_handles(MTPState *s, MTPControl *c, 857 MTPObject *o) 858 { 859 MTPData *d = usb_mtp_data_alloc(c); 860 uint32_t i = 0, handles[o->nchildren]; 861 MTPObject *iter; 862 863 trace_usb_mtp_op_get_object_handles(s->dev.addr, o->handle, o->path); 864 865 QLIST_FOREACH(iter, &o->children, list) { 866 handles[i++] = iter->handle; 867 } 868 assert(i == o->nchildren); 869 usb_mtp_add_u32_array(d, o->nchildren, handles); 870 871 return d; 872 } 873 874 static MTPData *usb_mtp_get_object_info(MTPState *s, MTPControl *c, 875 MTPObject *o) 876 { 877 MTPData *d = usb_mtp_data_alloc(c); 878 879 trace_usb_mtp_op_get_object_info(s->dev.addr, o->handle, o->path); 880 881 usb_mtp_add_u32(d, QEMU_STORAGE_ID); 882 usb_mtp_add_u16(d, o->format); 883 usb_mtp_add_u16(d, 0); 884 usb_mtp_add_u32(d, o->stat.st_size); 885 886 usb_mtp_add_u16(d, 0); 887 usb_mtp_add_u32(d, 0); 888 usb_mtp_add_u32(d, 0); 889 usb_mtp_add_u32(d, 0); 890 usb_mtp_add_u32(d, 0); 891 usb_mtp_add_u32(d, 0); 892 usb_mtp_add_u32(d, 0); 893 894 if (o->parent) { 895 usb_mtp_add_u32(d, o->parent->handle); 896 } else { 897 usb_mtp_add_u32(d, 0); 898 } 899 if (o->format == FMT_ASSOCIATION) { 900 usb_mtp_add_u16(d, 0x0001); 901 usb_mtp_add_u32(d, 0x00000001); 902 usb_mtp_add_u32(d, 0); 903 } else { 904 usb_mtp_add_u16(d, 0); 905 usb_mtp_add_u32(d, 0); 906 usb_mtp_add_u32(d, 0); 907 } 908 909 usb_mtp_add_str(d, o->name); 910 usb_mtp_add_time(d, o->stat.st_ctime); 911 usb_mtp_add_time(d, o->stat.st_mtime); 912 usb_mtp_add_wstr(d, L""); 913 914 return d; 915 } 916 917 static MTPData *usb_mtp_get_object(MTPState *s, MTPControl *c, 918 MTPObject *o) 919 { 920 MTPData *d = usb_mtp_data_alloc(c); 921 922 trace_usb_mtp_op_get_object(s->dev.addr, o->handle, o->path); 923 924 d->fd = open(o->path, O_RDONLY); 925 if (d->fd == -1) { 926 usb_mtp_data_free(d); 927 return NULL; 928 } 929 d->length = o->stat.st_size; 930 d->alloc = 512; 931 d->data = g_malloc(d->alloc); 932 return d; 933 } 934 935 static MTPData *usb_mtp_get_partial_object(MTPState *s, MTPControl *c, 936 MTPObject *o) 937 { 938 MTPData *d = usb_mtp_data_alloc(c); 939 off_t offset; 940 941 trace_usb_mtp_op_get_partial_object(s->dev.addr, o->handle, o->path, 942 c->argv[1], c->argv[2]); 943 944 d->fd = open(o->path, O_RDONLY); 945 if (d->fd == -1) { 946 usb_mtp_data_free(d); 947 return NULL; 948 } 949 950 offset = c->argv[1]; 951 if (offset > o->stat.st_size) { 952 offset = o->stat.st_size; 953 } 954 if (lseek(d->fd, offset, SEEK_SET) < 0) { 955 usb_mtp_data_free(d); 956 return NULL; 957 } 958 959 d->length = c->argv[2]; 960 if (d->length > o->stat.st_size - offset) { 961 d->length = o->stat.st_size - offset; 962 } 963 964 return d; 965 } 966 967 static void usb_mtp_command(MTPState *s, MTPControl *c) 968 { 969 MTPData *data_in = NULL; 970 MTPObject *o; 971 uint32_t nres = 0, res0 = 0; 972 973 /* sanity checks */ 974 if (c->code >= CMD_CLOSE_SESSION && s->session == 0) { 975 usb_mtp_queue_result(s, RES_SESSION_NOT_OPEN, 976 c->trans, 0, 0, 0); 977 return; 978 } 979 980 /* process commands */ 981 switch (c->code) { 982 case CMD_GET_DEVICE_INFO: 983 data_in = usb_mtp_get_device_info(s, c); 984 break; 985 case CMD_OPEN_SESSION: 986 if (s->session) { 987 usb_mtp_queue_result(s, RES_SESSION_ALREADY_OPEN, 988 c->trans, 1, s->session, 0); 989 return; 990 } 991 if (c->argv[0] == 0) { 992 usb_mtp_queue_result(s, RES_INVALID_PARAMETER, 993 c->trans, 0, 0, 0); 994 return; 995 } 996 trace_usb_mtp_op_open_session(s->dev.addr); 997 s->session = c->argv[0]; 998 usb_mtp_object_alloc(s, s->next_handle++, NULL, s->root); 999 #ifdef __linux__ 1000 if (usb_mtp_inotify_init(s)) { 1001 fprintf(stderr, "usb-mtp: file monitoring init failed\n"); 1002 } 1003 #endif 1004 break; 1005 case CMD_CLOSE_SESSION: 1006 trace_usb_mtp_op_close_session(s->dev.addr); 1007 s->session = 0; 1008 s->next_handle = 0; 1009 #ifdef __linux__ 1010 usb_mtp_inotify_cleanup(s); 1011 #endif 1012 usb_mtp_object_free(s, QTAILQ_FIRST(&s->objects)); 1013 assert(QTAILQ_EMPTY(&s->objects)); 1014 break; 1015 case CMD_GET_STORAGE_IDS: 1016 data_in = usb_mtp_get_storage_ids(s, c); 1017 break; 1018 case CMD_GET_STORAGE_INFO: 1019 if (c->argv[0] != QEMU_STORAGE_ID && 1020 c->argv[0] != 0xffffffff) { 1021 usb_mtp_queue_result(s, RES_INVALID_STORAGE_ID, 1022 c->trans, 0, 0, 0); 1023 return; 1024 } 1025 data_in = usb_mtp_get_storage_info(s, c); 1026 break; 1027 case CMD_GET_NUM_OBJECTS: 1028 case CMD_GET_OBJECT_HANDLES: 1029 if (c->argv[0] != QEMU_STORAGE_ID && 1030 c->argv[0] != 0xffffffff) { 1031 usb_mtp_queue_result(s, RES_INVALID_STORAGE_ID, 1032 c->trans, 0, 0, 0); 1033 return; 1034 } 1035 if (c->argv[1] != 0x00000000) { 1036 usb_mtp_queue_result(s, RES_SPEC_BY_FORMAT_UNSUPPORTED, 1037 c->trans, 0, 0, 0); 1038 return; 1039 } 1040 if (c->argv[2] == 0x00000000 || 1041 c->argv[2] == 0xffffffff) { 1042 o = QTAILQ_FIRST(&s->objects); 1043 } else { 1044 o = usb_mtp_object_lookup(s, c->argv[2]); 1045 } 1046 if (o == NULL) { 1047 usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE, 1048 c->trans, 0, 0, 0); 1049 return; 1050 } 1051 if (o->format != FMT_ASSOCIATION) { 1052 usb_mtp_queue_result(s, RES_INVALID_PARENT_OBJECT, 1053 c->trans, 0, 0, 0); 1054 return; 1055 } 1056 usb_mtp_object_readdir(s, o); 1057 if (c->code == CMD_GET_NUM_OBJECTS) { 1058 trace_usb_mtp_op_get_num_objects(s->dev.addr, o->handle, o->path); 1059 nres = 1; 1060 res0 = o->nchildren; 1061 } else { 1062 data_in = usb_mtp_get_object_handles(s, c, o); 1063 } 1064 break; 1065 case CMD_GET_OBJECT_INFO: 1066 o = usb_mtp_object_lookup(s, c->argv[0]); 1067 if (o == NULL) { 1068 usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE, 1069 c->trans, 0, 0, 0); 1070 return; 1071 } 1072 data_in = usb_mtp_get_object_info(s, c, o); 1073 break; 1074 case CMD_GET_OBJECT: 1075 o = usb_mtp_object_lookup(s, c->argv[0]); 1076 if (o == NULL) { 1077 usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE, 1078 c->trans, 0, 0, 0); 1079 return; 1080 } 1081 if (o->format == FMT_ASSOCIATION) { 1082 usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE, 1083 c->trans, 0, 0, 0); 1084 return; 1085 } 1086 data_in = usb_mtp_get_object(s, c, o); 1087 if (data_in == NULL) { 1088 usb_mtp_queue_result(s, RES_GENERAL_ERROR, 1089 c->trans, 0, 0, 0); 1090 return; 1091 } 1092 break; 1093 case CMD_GET_PARTIAL_OBJECT: 1094 o = usb_mtp_object_lookup(s, c->argv[0]); 1095 if (o == NULL) { 1096 usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE, 1097 c->trans, 0, 0, 0); 1098 return; 1099 } 1100 if (o->format == FMT_ASSOCIATION) { 1101 usb_mtp_queue_result(s, RES_INVALID_OBJECT_HANDLE, 1102 c->trans, 0, 0, 0); 1103 return; 1104 } 1105 data_in = usb_mtp_get_partial_object(s, c, o); 1106 if (data_in == NULL) { 1107 usb_mtp_queue_result(s, RES_GENERAL_ERROR, 1108 c->trans, 0, 0, 0); 1109 return; 1110 } 1111 nres = 1; 1112 res0 = data_in->length; 1113 break; 1114 default: 1115 trace_usb_mtp_op_unknown(s->dev.addr, c->code); 1116 usb_mtp_queue_result(s, RES_OPERATION_NOT_SUPPORTED, 1117 c->trans, 0, 0, 0); 1118 return; 1119 } 1120 1121 /* return results on success */ 1122 if (data_in) { 1123 assert(s->data_in == NULL); 1124 s->data_in = data_in; 1125 } 1126 usb_mtp_queue_result(s, RES_OK, c->trans, nres, res0, 0); 1127 } 1128 1129 /* ----------------------------------------------------------------------- */ 1130 1131 static void usb_mtp_handle_reset(USBDevice *dev) 1132 { 1133 MTPState *s = USB_MTP(dev); 1134 1135 trace_usb_mtp_reset(s->dev.addr); 1136 1137 #ifdef __linux__ 1138 usb_mtp_inotify_cleanup(s); 1139 #endif 1140 usb_mtp_object_free(s, QTAILQ_FIRST(&s->objects)); 1141 s->session = 0; 1142 usb_mtp_data_free(s->data_in); 1143 s->data_in = NULL; 1144 usb_mtp_data_free(s->data_out); 1145 s->data_out = NULL; 1146 g_free(s->result); 1147 s->result = NULL; 1148 } 1149 1150 static void usb_mtp_handle_control(USBDevice *dev, USBPacket *p, 1151 int request, int value, int index, 1152 int length, uint8_t *data) 1153 { 1154 int ret; 1155 1156 ret = usb_desc_handle_control(dev, p, request, value, index, length, data); 1157 if (ret >= 0) { 1158 return; 1159 } 1160 1161 trace_usb_mtp_stall(dev->addr, "unknown control request"); 1162 p->status = USB_RET_STALL; 1163 } 1164 1165 static void usb_mtp_cancel_packet(USBDevice *dev, USBPacket *p) 1166 { 1167 /* we don't use async packets, so this should never be called */ 1168 fprintf(stderr, "%s\n", __func__); 1169 } 1170 1171 static void usb_mtp_handle_data(USBDevice *dev, USBPacket *p) 1172 { 1173 MTPState *s = USB_MTP(dev); 1174 MTPControl cmd; 1175 mtp_container container; 1176 uint32_t params[5]; 1177 int i, rc; 1178 1179 switch (p->ep->nr) { 1180 case EP_DATA_IN: 1181 if (s->data_out != NULL) { 1182 /* guest bug */ 1183 trace_usb_mtp_stall(s->dev.addr, "awaiting data-out"); 1184 p->status = USB_RET_STALL; 1185 return; 1186 } 1187 if (p->iov.size < sizeof(container)) { 1188 trace_usb_mtp_stall(s->dev.addr, "packet too small"); 1189 p->status = USB_RET_STALL; 1190 return; 1191 } 1192 if (s->data_in != NULL) { 1193 MTPData *d = s->data_in; 1194 int dlen = d->length - d->offset; 1195 if (d->first) { 1196 trace_usb_mtp_data_in(s->dev.addr, d->trans, d->length); 1197 container.length = cpu_to_le32(d->length + sizeof(container)); 1198 container.type = cpu_to_le16(TYPE_DATA); 1199 container.code = cpu_to_le16(d->code); 1200 container.trans = cpu_to_le32(d->trans); 1201 usb_packet_copy(p, &container, sizeof(container)); 1202 d->first = false; 1203 if (dlen > p->iov.size - sizeof(container)) { 1204 dlen = p->iov.size - sizeof(container); 1205 } 1206 } else { 1207 if (dlen > p->iov.size) { 1208 dlen = p->iov.size; 1209 } 1210 } 1211 if (d->fd == -1) { 1212 usb_packet_copy(p, d->data + d->offset, dlen); 1213 } else { 1214 if (d->alloc < p->iov.size) { 1215 d->alloc = p->iov.size; 1216 d->data = g_realloc(d->data, d->alloc); 1217 } 1218 rc = read(d->fd, d->data, dlen); 1219 if (rc != dlen) { 1220 memset(d->data, 0, dlen); 1221 s->result->code = RES_INCOMPLETE_TRANSFER; 1222 } 1223 usb_packet_copy(p, d->data, dlen); 1224 } 1225 d->offset += dlen; 1226 if (d->offset == d->length) { 1227 usb_mtp_data_free(s->data_in); 1228 s->data_in = NULL; 1229 } 1230 } else if (s->result != NULL) { 1231 MTPControl *r = s->result; 1232 int length = sizeof(container) + r->argc * sizeof(uint32_t); 1233 if (r->code == RES_OK) { 1234 trace_usb_mtp_success(s->dev.addr, r->trans, 1235 (r->argc > 0) ? r->argv[0] : 0, 1236 (r->argc > 1) ? r->argv[1] : 0); 1237 } else { 1238 trace_usb_mtp_error(s->dev.addr, r->code, r->trans, 1239 (r->argc > 0) ? r->argv[0] : 0, 1240 (r->argc > 1) ? r->argv[1] : 0); 1241 } 1242 container.length = cpu_to_le32(length); 1243 container.type = cpu_to_le16(TYPE_RESPONSE); 1244 container.code = cpu_to_le16(r->code); 1245 container.trans = cpu_to_le32(r->trans); 1246 for (i = 0; i < r->argc; i++) { 1247 params[i] = cpu_to_le32(r->argv[i]); 1248 } 1249 usb_packet_copy(p, &container, sizeof(container)); 1250 usb_packet_copy(p, ¶ms, length - sizeof(container)); 1251 g_free(s->result); 1252 s->result = NULL; 1253 } 1254 break; 1255 case EP_DATA_OUT: 1256 if (p->iov.size < sizeof(container)) { 1257 trace_usb_mtp_stall(s->dev.addr, "packet too small"); 1258 p->status = USB_RET_STALL; 1259 return; 1260 } 1261 usb_packet_copy(p, &container, sizeof(container)); 1262 switch (le16_to_cpu(container.type)) { 1263 case TYPE_COMMAND: 1264 if (s->data_in || s->data_out || s->result) { 1265 trace_usb_mtp_stall(s->dev.addr, "transaction inflight"); 1266 p->status = USB_RET_STALL; 1267 return; 1268 } 1269 cmd.code = le16_to_cpu(container.code); 1270 cmd.argc = (le32_to_cpu(container.length) - sizeof(container)) 1271 / sizeof(uint32_t); 1272 cmd.trans = le32_to_cpu(container.trans); 1273 if (cmd.argc > ARRAY_SIZE(cmd.argv)) { 1274 cmd.argc = ARRAY_SIZE(cmd.argv); 1275 } 1276 if (p->iov.size < sizeof(container) + cmd.argc * sizeof(uint32_t)) { 1277 trace_usb_mtp_stall(s->dev.addr, "packet too small"); 1278 p->status = USB_RET_STALL; 1279 return; 1280 } 1281 usb_packet_copy(p, ¶ms, cmd.argc * sizeof(uint32_t)); 1282 for (i = 0; i < cmd.argc; i++) { 1283 cmd.argv[i] = le32_to_cpu(params[i]); 1284 } 1285 trace_usb_mtp_command(s->dev.addr, cmd.code, cmd.trans, 1286 (cmd.argc > 0) ? cmd.argv[0] : 0, 1287 (cmd.argc > 1) ? cmd.argv[1] : 0, 1288 (cmd.argc > 2) ? cmd.argv[2] : 0, 1289 (cmd.argc > 3) ? cmd.argv[3] : 0, 1290 (cmd.argc > 4) ? cmd.argv[4] : 0); 1291 usb_mtp_command(s, &cmd); 1292 break; 1293 default: 1294 /* not needed as long as the mtp device is read-only */ 1295 p->status = USB_RET_STALL; 1296 return; 1297 } 1298 break; 1299 case EP_EVENT: 1300 #ifdef __linux__ 1301 if (!QTAILQ_EMPTY(&s->events)) { 1302 struct MTPMonEntry *e = QTAILQ_LAST(&s->events, events); 1303 uint32_t handle; 1304 int len = sizeof(container) + sizeof(uint32_t); 1305 1306 if (p->iov.size < len) { 1307 trace_usb_mtp_stall(s->dev.addr, 1308 "packet too small to send event"); 1309 p->status = USB_RET_STALL; 1310 return; 1311 } 1312 1313 QTAILQ_REMOVE(&s->events, e, next); 1314 container.length = cpu_to_le32(len); 1315 container.type = cpu_to_le32(TYPE_EVENT); 1316 container.code = cpu_to_le16(e->event); 1317 container.trans = 0; /* no trans specific events */ 1318 handle = cpu_to_le32(e->handle); 1319 usb_packet_copy(p, &container, sizeof(container)); 1320 usb_packet_copy(p, &handle, sizeof(uint32_t)); 1321 g_free(e); 1322 return; 1323 } 1324 #endif 1325 p->status = USB_RET_NAK; 1326 return; 1327 default: 1328 trace_usb_mtp_stall(s->dev.addr, "invalid endpoint"); 1329 p->status = USB_RET_STALL; 1330 return; 1331 } 1332 1333 if (p->actual_length == 0) { 1334 trace_usb_mtp_nak(s->dev.addr, p->ep->nr); 1335 p->status = USB_RET_NAK; 1336 return; 1337 } else { 1338 trace_usb_mtp_xfer(s->dev.addr, p->ep->nr, p->actual_length, 1339 p->iov.size); 1340 return; 1341 } 1342 } 1343 1344 static void usb_mtp_realize(USBDevice *dev, Error **errp) 1345 { 1346 MTPState *s = USB_MTP(dev); 1347 1348 usb_desc_create_serial(dev); 1349 usb_desc_init(dev); 1350 QTAILQ_INIT(&s->objects); 1351 if (s->desc == NULL) { 1352 if (s->root == NULL) { 1353 error_setg(errp, "usb-mtp: x-root property must be configured"); 1354 return; 1355 } 1356 s->desc = strrchr(s->root, '/'); 1357 if (s->desc && s->desc[0]) { 1358 s->desc = g_strdup(s->desc + 1); 1359 } else { 1360 s->desc = g_strdup("none"); 1361 } 1362 } 1363 } 1364 1365 static const VMStateDescription vmstate_usb_mtp = { 1366 .name = "usb-mtp", 1367 .unmigratable = 1, 1368 .version_id = 1, 1369 .minimum_version_id = 1, 1370 .fields = (VMStateField[]) { 1371 VMSTATE_USB_DEVICE(dev, MTPState), 1372 VMSTATE_END_OF_LIST() 1373 } 1374 }; 1375 1376 static Property mtp_properties[] = { 1377 DEFINE_PROP_STRING("x-root", MTPState, root), 1378 DEFINE_PROP_STRING("desc", MTPState, desc), 1379 DEFINE_PROP_END_OF_LIST(), 1380 }; 1381 1382 static void usb_mtp_class_initfn(ObjectClass *klass, void *data) 1383 { 1384 DeviceClass *dc = DEVICE_CLASS(klass); 1385 USBDeviceClass *uc = USB_DEVICE_CLASS(klass); 1386 1387 uc->realize = usb_mtp_realize; 1388 uc->product_desc = "QEMU USB MTP"; 1389 uc->usb_desc = &desc; 1390 uc->cancel_packet = usb_mtp_cancel_packet; 1391 uc->handle_attach = usb_desc_attach; 1392 uc->handle_reset = usb_mtp_handle_reset; 1393 uc->handle_control = usb_mtp_handle_control; 1394 uc->handle_data = usb_mtp_handle_data; 1395 dc->fw_name = "mtp"; 1396 dc->vmsd = &vmstate_usb_mtp; 1397 dc->props = mtp_properties; 1398 } 1399 1400 static TypeInfo mtp_info = { 1401 .name = TYPE_USB_MTP, 1402 .parent = TYPE_USB_DEVICE, 1403 .instance_size = sizeof(MTPState), 1404 .class_init = usb_mtp_class_initfn, 1405 }; 1406 1407 static void usb_mtp_register_types(void) 1408 { 1409 type_register_static(&mtp_info); 1410 } 1411 1412 type_init(usb_mtp_register_types) 1413